Interestingly, XIX century Poland has exactly the "minimum amount consumed" kind of quotas of alcohol... It was legislated by nobles who were producing alcohol from their grain and figured they'd force peasants to but it from them, to periodically extract whatever monetary surplus the peasants (serfs) managed to build up. One of the result was of course rampant alcoholism, since the peasants now owned buckets of vodka and they figured they might as well drink it if they paid for it...